We're using 0.55 at present but hope to have a version 0.6 up and running on a server somewhere soon. The reason I asked is because we're looking at using CA to primarily manage our own library and museum collections, which is fine, but we've also got a small bit of work to create an online database of Projects, and reports for those projects (we're thinking a project object and report sub objects in CA). We'd like to use CA to do this as it would simplify our maintenance requirements and it seems like it has everything we need to be able to do this.
Given the semi-independent nature of this side project it makes sense to us to have it as separate collection, and given that other people outside our organisation are going to need access to it to both search it and use it as a catalogue we were wondering about the possibility of having a fairly specialized object type for only the one collection to make their user experience simpler and their training requirements lower.
Hope that makes sense, essentially we're looking at giving them their own little corner of our collective access setup if possible.